CN114541993A - Totally-enclosed multistage sedimentation underground mud pit device and construction method - Google Patents
Totally-enclosed multistage sedimentation underground mud pit device and construction method Download PDFInfo
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- CN114541993A CN114541993A CN202210262269.1A CN202210262269A CN114541993A CN 114541993 A CN114541993 A CN 114541993A CN 202210262269 A CN202210262269 A CN 202210262269A CN 114541993 A CN114541993 A CN 114541993A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
- E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
本发明涉及建筑用泥浆制备储存技术领域，具体为一种全封闭多级沉淀地下泥浆池装置及施工方法，泥浆池装置包括钢护筒、泥沙分离机和循环组件，有益效果为：通过将钢护筒、连通管、泥砂分离机、格栅及泥浆组成一整套泥浆地下循环系统，在桩基成孔时，由现有技术中通过泥浆池集中过滤泥浆转变为通过护筒分级过滤，达到泥浆的逐级过滤并重复使用，在节约泥浆池的基础上将泥浆循环系统与桩基成孔较好的统一起来，并通过启闭阀门的控制，合理掌握泥浆过滤路径，确保泥浆重新进入钻孔时能够保证泥浆的合理指标。
The invention relates to the technical field of construction mud preparation and storage, in particular to a fully enclosed multi-stage precipitation underground mud pool device and a construction method. The mud pool device comprises a steel casing, a sediment separator and a circulation component, and the beneficial effects are: Steel casing, connecting pipe, mud-sand separator, grille and mud form a complete set of mud underground circulation system. When the pile foundation is formed into holes, the centralized filtering of mud through the mud pool in the prior art is changed to the graded filtration through the casing to achieve The mud is filtered step by step and reused. On the basis of saving the mud pool, the mud circulation system and the pile foundation hole formation are better unified, and through the control of the opening and closing valve, the mud filtering path is reasonably controlled to ensure that the mud re-enters the drilling rig. A reasonable index of the mud can be guaranteed when the hole is drilled.
Description
Technical Field
The invention relates to the technical field of preparation and storage of slurry for buildings, in particular to a totally-enclosed multistage sedimentation underground slurry tank device and a construction method.
Background
In the construction process of the bridge pile foundation, under the condition of using the slurry to protect the wall, the slurry plays an important role in protecting the stability of the drilled hole, ensuring the quality of the hole wall and carrying the drilling slag.
In the construction process, a foundation pit is excavated at the periphery of the pile foundation construction and is generally used as a drilling mud circulation pool, or a finished mud container is used as the mud pool.
The first slurry tank requires a larger field which can meet the circulation capacity of slurry around the pile foundation. Because the mud pit is formed by excavating the foundation pit, the stability of the pit wall and the large porosity of the side slope easily cause mud waste, and in addition, the leaked mud pit and mud can also generate certain environmental influence on the surrounding environment and water areas.
And a finished product circulating slurry tank adopted by the second slurry tank needs to be subjected to finished product processing, foundation pit excavation is carried out in the field implementation process, and then the finished product slurry tank is arranged in the foundation pit which is excavated in advance. Although the pit wall cannot be affected, the workload of foundation pit excavation is large, the manufacturing, installing and dismantling processes are complicated, and feasible operation on site is not facilitated.
To the setting and the construction operation in above-mentioned two kinds of mud ponds, though can satisfy in the pile foundation work progress drilling mud get rid of, mud circulation outward transport, but also caused certain influence to the site operation simultaneously: the slurry leaks, the slope is unstable, the working procedure is complicated, the cost consumption is obvious, the environmental impact is obvious and the like. Particularly for the construction of pile foundations in river channels or water areas, foundation pit excavation on site or finished mud ponds obviously do not have construction conditions due to limited sites
Disclosure of Invention
The invention aims to provide a totally-enclosed multistage sedimentation underground slurry tank device and a construction method, which aim to solve the problem of slurry storage in the building construction process.
In order to achieve the purpose, the invention provides the following technical scheme:
a totally enclosed multistage sedimentation underground mud pit apparatus, the mud pit apparatus comprising:
the device comprises six groups of steel casing cylinders distributed in a matrix manner, wherein the six groups of steel casing cylinders are embedded underground, the inner cavity of the lower end of each steel casing cylinder is sealed through a sealing bottom, a top plate is arranged at the port of the upper end of each steel casing cylinder, and a grid is arranged at the position, corresponding to the port of each steel casing cylinder, of the top plate;
the silt separator is positioned on the ground and is provided with a discharge port, a feed pipe and a return pipe;
the circulation subassembly, the circulation subassembly is including the communicating pipe that communicates six groups steel that communicate the matrix distribution protected a section of thick bamboo and be located the opening and closing valve in the steel protects a section of thick bamboo, and the communicating pipe that is located in a pair of steel that is close to the silt separating centrifuge communicates the silt separating centrifuge through inlet pipe, back flow respectively, communicating pipe is connected to opening and closing valve's one end, and opening and closing valve's lower extreme is connected with the suction pipe that extends to the back cover upper end.
Preferably, an installation inner ring is arranged in the middle of an inner cavity of the grid, the grid and the installation inner ring are sealed through a grid mesh, and the feeding pipe and the backflow pipe penetrate through the installation inner ring to be communicated with the silt separator and the steel casing.
Preferably, the lower end of the grid is provided with a positioning lantern ring, the upper end of the grid is fixed on the top plate through screws, and the positioning lantern ring is sleeved on the inner wall of the upper end port of the steel casing.
Preferably, the top plate is provided with mounting grooves at positions corresponding to ports at the upper ends of the six groups of steel casing distributed in the matrix, mounting holes are formed in four corner positions of the top plate, the top plate is fixed on the ground through inserting cones inserted in the mounting holes, and the grating is mounted in the mounting grooves.
Preferably, the upper end of the on-off valve is provided with a pull rod, the upper end of the pull rod extends to the installation inner ring, the upper end part of the pull rod penetrates through the installation inner ring, and the pull rod is tightly connected with the upper end surface of the installation inner ring through a fixing bolt.
Preferably, the end part of the lower end of the material suction pipe is provided with a chassis, the upper end of the back cover is provided with a circular balance weight ring, the middle of the balance weight ring is concentrically provided with a filtering inner ring, and the balance weight ring is fixedly connected with the filtering inner ring through beams distributed in a circumferential array manner.
Preferably, the upper end of the filtering inner ring is provided with a plurality of groups of connecting rods distributed in a circumferential array mode, the upper ends of the connecting rods are fixedly connected with the chassis through connecting bolts, gaps between the adjacent connecting rods are smaller than the inner diameter of the material suction pipe, the upper end of the counterweight ring is provided with a scraping ring with a conical cambered inner wall, and the outer wall of the scraping ring is attached to the inner wall of the steel casing.
A construction method implemented according to the totally-enclosed multistage sedimentation underground mud pit device comprises the following steps:
the method comprises the following steps: calculating the maximum mud amount in the drill hole in the hole forming process according to the length, the diameter and the number of the pile foundations, and calculating the number and the embedding depth of the required steel casing;
step two: forming a hole through a hole forming machine, embedding a steel protective cylinder and preparing a bottom sealing;
step three: preparing communicating pipes to enter a field according to the calculated number of the steel casing, reserving a communicating pipe access port at a position which is mm away from the top of the steel casing in advance when the steel casing is manufactured, and effectively connecting the communicating pipes with the steel casing to prevent slurry leakage;
step four: after the communicating pipe is installed, the opening and closing valve is closed, and partial or all valves are opened and closed according to requirements in the using process;
step five: after all the communicating pipes and the opening and closing valves are installed, installing a top plate and a grid at the upper end port of the steel casing, fixing the periphery of the top plate with the ground by using expansion bolts, and fixing the grid on the top plate through a buckle;
step six: starting a drilling machine to perform pore-forming operation, and timely filtering, circulating and reusing slurry and transporting drilling slag by using a mud-sand separator and a transporting vehicle, wherein the whole slurry circulating system is normally used;
step seven: after the pile foundation at the first position completes the pore-forming, the drilling machine shifts, the mud-sand separator shifts, the communicating pipes are arranged and the valves are opened and closed, the steps are repeated to complete the pore-forming of the rest pile foundations until all the pile foundations complete the pore-forming, and the device is dismantled.
Preferably, the steel protects a section of thick bamboo for pile foundation construction's interim protects a section of thick bamboo or permanently protects a section of thick bamboo, and what bury in advance before pile foundation construction ensures that pile foundation pore-forming in-process pore wall is stable, communicating pipe is for connecting the circular metal pipeline between each steel protects a section of thick bamboo, and its material is metal steel pipe or stereoplasm plastic tubing, and communicating pipe and steel protect a section of thick bamboo and carry out welded connection or sealing connection, the grid is the steel grating, the back cover is impervious or the weak material of permeating water such as clay, powder clay, its purpose is shutoff steel protects a section of thick bamboo bottom space, ensures that mud can not permeate to the bottom of steel protecting a section of thick bamboo in the circulation.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the mud pit formed by six groups of steel casing cylinders distributed in a matrix manner is circularly filtered and separated, so that the problems of effective circulation of the bridge pile foundation construction mud and effective removal of drilling slag under the limited conditions of a river channel, a water area and a field are solved, and an underground mud pit device and a construction method are provided, wherein the mud performance after circulation can be repeatedly utilized;
through protecting a section of thick bamboo with the steel, communicating pipe, silt separator, a whole set of mud underground circulation system is constituteed to grid and mud, when pile foundation pore-forming, concentrate through the mud pond among the prior art and filter mud and change into through protecting a section of thick bamboo and filter in grades, reach filtering and used repeatedly step by step of mud, be in the same place the better system of mud circulation system and pile foundation pore-forming on the basis of practicing thrift the mud pond, and through the control of start-stop valve, rationally master mud filtration route, can guarantee the reasonable index of mud when guaranteeing that mud gets into drilling again.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a schematic structural view of a steel casing according to the present invention;
FIG. 3 is a schematic view of the back cover mounting structure of the present invention;
FIG. 4 is a perspective view of the top plate of the present invention;
fig. 5 is a schematic perspective view of the weight ring of the present invention.
In the figure: 1. a steel casing; 2. a silt separator; 3. a discharge port; 4. a return pipe; 5. a feed pipe; 6. opening and closing the valve; 7. a pull rod; 8. a communicating pipe; 9. sealing the bottom; 10. a counterweight ring; 11. a top plate; 12. fixing the bolt; 13. a grid; 14. a grid; 15. a positioning collar; 16. mounting grooves; 17. installing an inner ring; 18. scraping rings; 19. filtering the inner ring; 20. a material suction pipe; 21. a chassis; 22. a connecting bolt; 23. a connecting rod; 24. a cross beam; 25. and (7) installing holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution:
example 1:
a totally-enclosed multistage sedimentation underground slurry tank device comprises a steel casing 1, a silt separator 2 and a circulating assembly.
Six groups of steel protecting cylinders 1 distributed in a matrix are embedded underground, and a series mud pit is formed by utilizing the multiple groups of steel protecting cylinders 1, so that mud of the whole device is ensured to be smoothly circulated, precipitated and recycled.
The inner cavity of the lower end of the steel casing 1 is sealed through the back cover 9, the purpose of the inner cavity is to plug the bottom space of the steel casing 1 and ensure that slurry cannot permeate to the bottom of the steel casing 1 in the circulating process, the material thickness of the back cover 9 can be 0.5-2.0 m according to the size and the buried depth of the steel casing 1 and the maximum slurry storage amount of a single steel casing 1, and the material thickness of the back cover 9 can be properly increased if the loss of the slurry amount is large in the using process, so that the better slurry storage capacity of the steel casing 1 is ensured.
The silt separator 2 is located on the ground, a discharge port 3, a feed pipe 5 and a return pipe 4 are arranged on the silt separator 2, the circulating assembly comprises communicating pipes 8 of six groups of steel protective cylinders 1 which are distributed in a communicating matrix and an opening and closing valve 6 located in the steel protective cylinders 1, the communicating pipes 8 in a pair of steel protective cylinders 1 close to the silt separator 2 are communicated with the silt separator 2 through the feed pipe 5 and the return pipe 4 respectively, one end of the opening and closing valve 6 is connected with the communicating pipes 8, and the lower end of the opening and closing valve 6 is connected with a suction pipe 20 extending to the upper end of a back cover 9.
The communication between the steel casing 1 and the silt separator 2 is realized through the circulating assembly, the filtering separation of the slurry is realized, and further, in the using process, the path of the slurry flowing through the pipeline is controlled through the opening and closing valve 6, if the slurry has more impurities in the practical implementation process, the slurry needs to be filtered for many times, the quantity of the slurry flowing through the pipeline and the steel casing 1 can be increased through the opening and closing valve 6, and the purpose that the slurry is filtered for many times and meets the performance of a slurry retaining wall is achieved; if the impurities in the slurry are less, the quantity of the filtered slurry flowing through the steel casing 1 can be properly reduced by opening and closing the valve 6, and the slurry is ensured to meet the index requirement of reuse.
When the device is used, the mud in the steel casing 1 is sucked into the mud separator 2 through the cooperation of the mud separator 2 and the feeding pipe 5, the larger impurities are separated and filtered, the mud flows back to the steel casing 1 through the return pipe 4, and the mud in the six groups of steel casings 1 distributed in a matrix is uniformly treated through the communicating pipes 8 which are mutually communicated.
After the treatment is finished, the sucked mud is discharged through a discharge port 3 of the mud-sand separator 2, and the transportation and the use of the mud are realized through a transportation device.
Example 2:
on the basis of embodiment 1, in order to realize convenient installation of the on-off valve 6, the application further has the advantages that an installation inner ring 17 is arranged in the middle of an inner cavity of the grating 13, the grating 13 and the installation inner ring 17 are sealed through a grating net 14, the feeding pipe 5 and the return pipe 4 penetrate through the installation inner ring 17 to be communicated with the silt separator 2 and the steel casing 1, the pull rod 7 is arranged at the upper end of the on-off valve 6, the upper end of the pull rod 7 extends to the installation inner ring 17, the upper end part of the pull rod 7 penetrates through the installation inner ring 17, and the pull rod 7 is tightly connected with the upper end face of the installation inner ring 17 through the fixing bolt 12.
The purpose of conveniently installing the opening and closing valve 6 is achieved by arranging the installation inner ring 17 in the grid 13 to be matched with the pull rod 7.
Example 3:
on the basis of embodiment 1, in order to block the pipeline by larger impurities in the slurry running process, the slurry pump further comprises a chassis 21 arranged at the lower end of the material suction pipe 20, an annular counterweight ring 10 arranged at the upper end of the back cover 9, a filtering inner ring 19 concentrically arranged in the middle of the counterweight ring 10, and the counterweight ring 10 and the filtering inner ring 19 are fixedly connected through cross beams 24 distributed in a circumferential array.
The upper end of the inner filtering ring 19 is provided with a plurality of groups of connecting rods 23 distributed in a circumferential array mode, the upper ends of the connecting rods 23 are fixedly connected with the chassis 21 through connecting bolts 22, gaps between the adjacent connecting rods 23 are smaller than the inner diameter of the material suction pipe 20, the position of the material suction pipe 20 is limited by arranging the balance weight to change 10, the material suction pipe 20 is prevented from deviating in the slurry flowing process, meanwhile, the connecting rods 23 distributed in the circumferential array mode form a filtering layer for filtering impurities larger than the inner diameter of the material suction pipe 20, and blocking is prevented.
Example 4:
on the basis of embodiment 3, in order to facilitate cleaning the inner wall of the steel casing 1, the application further comprises a scraping ring 18 provided with a conical cambered inner wall at the upper end of the counterweight ring 10, and the outer wall of the scraping ring 18 is attached to the inner wall of the steel casing 1.
Inhale being connected of material pipe 20 and counterweight ring 10 through the setting to at the in-process of dismantling the clearance, drive counterweight ring 10 through inhaling material pipe 20 and rise, through setting up scraping ring 18, at the ascending in-process of counterweight ring 10, utilize scraping ring 18 to realize carrying out the clearance in step to steel casing 1 inner wall, avoid the adhesion of mud.
A construction method realized according to the totally-enclosed multistage sedimentation underground mud pit device comprises the following steps:
the method comprises the following steps: calculating the maximum mud amount in the drill hole in the hole forming process according to the length, the diameter and the number of the pile foundations, and calculating the number and the embedding depth of the steel casing 1;
step two: forming a hole through a hole forming machine, embedding the steel protective cylinder 1 and preparing a bottom sealing 9;
step three: preparing the communicating pipes 8 to enter a field according to the calculated number of the steel casing 1, reserving an inlet of the communicating pipe 8 at a position 500mm away from the top of the casing in advance when the steel casing 1 is manufactured, and effectively connecting the communicating pipe 8 with the steel casing 1 to prevent slurry leakage;
step four: after the communicating pipe 8 is installed, the opening and closing valve 6 is closed, and in the using process, partial or all valves are opened and closed according to requirements;
step five: after the communicating pipe 8 and the on-off valve 6 are installed, the top plate 11 and the grating 13 are installed at the upper end port of the steel casing 1, the periphery of the top plate 11 is fixed with the ground through expansion bolts, and the grating 13 is fixed on the top plate 11 through a buckle;
step six: starting a drilling machine to perform pore-forming operation, and timely performing slurry filtration, circulation and reuse and drilling slag outward transportation by using a mud-sand separator 2 and an outward transportation vehicle, wherein the whole slurry circulation system is normally used;
step seven: after the pile foundation at the first position completes the pore-forming, the drilling machine shifts, the mud-sand separator 2 shifts, the communicating pipes 8 are arranged and the on-off valve 6 is opened, the steps are repeated to complete the pore-forming of the rest pile foundations until the pile foundation completes the pore-forming, and the device is disassembled.
Wherein: the steel protects a section of thick bamboo 1 for the interim section of thick bamboo or the permanent section of thick bamboo that protects of pile foundation construction, bury in advance before the pile foundation construction, it is stable to ensure pile foundation pore-forming in-process pore wall, communicating pipe 8 is for connecting the circular metal pipeline between each steel protects a section of thick bamboo 1, and its material is metal steel pipe or stereoplasm plastic tubing, and communicating pipe 8 and steel protect a section of thick bamboo 1 and carry out welded connection or sealing connection, and grid 13 is the steel grating, and back cover 9 is impervious or the material that permeates water weakly such as clay, powder clay, its purpose is shutoff steel protects a bottom space, ensures that mud can not permeate to the bottom of steel protecting a section of thick bamboo 1 in the circulation process.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a totally closed multistage underground mud pit device that deposits which characterized in that: the mud pit device includes:
the steel protecting cylinder comprises steel protecting cylinders (1), six groups of the steel protecting cylinders (1) distributed in a matrix are embedded underground, the inner cavity of the lower end of each steel protecting cylinder (1) is sealed through a sealing bottom (9), a top plate (11) is installed at the port of the upper end of each steel protecting cylinder (1), and a grid (13) is arranged at the position, corresponding to the port of each steel protecting cylinder (1), of each top plate (11);
the silt separator (2) is located on the ground, and a discharge hole (3), a feed pipe (5) and a return pipe (4) are arranged on the silt separator (2);
circulation subassembly, circulation subassembly is including communicating pipe (8) that the six groups steel that communicate the matrix distribution protected a section of thick bamboo (1) and being located opening and closing valve (6) that the steel protected a section of thick bamboo (1), and communicating pipe (8) that are located a pair of steel that are close to silt separator (2) and protect a section of thick bamboo (1) are respectively through inlet pipe (5), back flow (4) intercommunication silt separator (2), communicating pipe (8) are connected to the one end of opening and closing valve (6), and the lower extreme of opening and closing valve (6) is connected with inhales material pipe (20) that extend to back cover (9) upper end.
2. The totally-enclosed multistage sedimentation underground slurry tank device according to claim 1, characterized in that: an installation inner ring (17) is arranged in the middle of an inner cavity of the grating (13), the grating (13) and the installation inner ring (17) are sealed through a grating net (14), and the inlet pipe (5) and the return pipe (4) penetrate through the installation inner ring (17) to communicate the silt separator (2) and the steel casing (1).
3. A totally enclosed multistage sedimentation underground slurry tank apparatus as claimed in claim 2, characterized in that: the lower extreme of grid (13) is provided with position lantern ring (15), and the upper end fix with screw of grid (13) is on roof (11), position lantern ring (15) cup joints on the upper end port inner wall of steel casing (1).
4. A totally enclosed multistage sedimentation underground slurry tank apparatus according to claim 3, characterized in that: the mounting groove (16) is formed in the position, corresponding to the port at the upper end of the six groups of steel casing cylinders (1) distributed in the matrix, of the top plate (11), mounting holes (25) are formed in the four corner positions of the top plate (11), the top plate (11) is fixed to the ground through inserting cones inserted into the mounting holes (25), and the grating (13) is mounted in the mounting groove (16).
5. The totally-enclosed multistage sedimentation underground slurry tank device according to claim 1, characterized in that: the upper end of the opening and closing valve (6) is provided with a pull rod (7), the upper end of the pull rod (7) extends to the mounting inner ring (17), the upper end of the pull rod (7) penetrates through the mounting inner ring (17), and the pull rod (7) is fixedly connected with the upper end face of the mounting inner ring (17) through a fixing bolt (12).
6. The totally-enclosed multistage sedimentation underground slurry tank device according to claim 1, characterized in that: the lower end part of the material suction pipe (20) is provided with a chassis (21), the upper end of the back cover (9) is provided with a circular counterweight ring (10), the middle of the counterweight ring (10) is concentrically provided with a filtering inner ring (19), and the counterweight ring (10) is fixedly connected with the filtering inner ring (19) through cross beams (24) distributed in a circumferential array manner.
7. The totally-enclosed multistage sedimentation underground slurry tank device according to claim 6, characterized in that: the upper end of the filtering inner ring (19) is provided with a plurality of groups of connecting rods (23) distributed in a circumferential array manner, the upper ends of the connecting rods (23) are fixedly connected with a chassis (21) through connecting bolts (22), gaps between the adjacent connecting rods (23) are smaller than the inner diameter of a material suction pipe (20), the upper end of the counterweight ring (10) is provided with a scraping ring (18) of a conical cambered surface inner wall, and the outer wall of the scraping ring (18) is attached to the inner wall of the steel casing (1).
8. A construction method implemented by a totally-enclosed multistage sedimentation underground slurry tank device according to any one of claims 1 to 7, characterized in that: the construction method comprises the following steps:
the method comprises the following steps: calculating the maximum mud amount in the drill hole in the hole forming process according to the length, the diameter and the number of the pile foundations, and calculating the number and the embedding depth of the required steel casing (1);
step two: forming a hole through a hole forming machine, embedding the steel protective cylinder (1) and manufacturing a bottom sealing (9) at the bottom;
step three: preparing the communicating pipes (8) to enter a field according to the calculated number of the steel casing (1), reserving an inlet of the communicating pipe (8) at a position 500mm away from the top of the casing in advance when the steel casing (1) is manufactured, and effectively connecting the communicating pipe (8) with the steel casing (1) to prevent slurry leakage;
step four: after the communicating pipe (8) is installed, the opening and closing valve (6) is closed, and in the using process, partial or all valves are opened and closed according to requirements;
step five: after all the communicating pipes (8) and the opening and closing valves (6) are installed, installing a top plate (11) and a grating (13) at the port position of the upper end of the steel casing (1), fixing the periphery of the top plate (11) with the ground by using expansion bolts, and fixing the grating (13) on the top plate (11) through a buckle;
step six: a drilling machine is started to carry out pore-forming operation, a mud-sand separator (2) and an outward transport vehicle are utilized to carry out mud filtration, circulation, reuse and outward transport of drilling slag in time, and the whole mud circulation system is normally used;
step seven: after the pile foundation at the first position is formed, the drilling machine is shifted, the mud-sand separator (2) is shifted, the communicating pipes (8) and the opening and closing valves (6) are arranged, the steps are repeated to form holes of the rest pile foundations, and the device is dismantled until all the pile foundations are formed.
9. A construction method of the totally-enclosed multistage sedimentation underground slurry tank device according to claim 8, characterized in that: a section of thick bamboo is protected for the interim section of thick bamboo or the permanent section of thick bamboo that protects of pile foundation construction, buries in advance before the pile foundation construction, ensures that pile foundation pore-forming in-process pore wall is stable, circular metal pipeline between each steel protects section of thick bamboo (1) for connecting communicating pipe (8), and its material is metal steel pipe or stereoplasm plastic tubing, and communicating pipe (8) and steel protect a section of thick bamboo (1) and carry out welded connection or sealing connection, grid (13) are the steel grating, back cover (9) are impervious or the weak material that permeates water such as clay, silty clay, and its purpose is the shutoff steel and protects a bottom space, ensures that mud can not permeate to the bottom of steel protecting a section of thick bamboo (1) in the circulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210262269.1A CN114541993B (en) | 2022-03-17 | 2022-03-17 | A fully enclosed multi-stage sedimentation underground mud pool device and construction method |
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| CN202210262269.1A CN114541993B (en) | 2022-03-17 | 2022-03-17 | A fully enclosed multi-stage sedimentation underground mud pool device and construction method |
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| CN114541993B CN114541993B (en) | 2024-02-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116733392A (en) * | 2023-08-15 | 2023-09-12 | 吉林市政建设集团有限公司 | Pile foundation slurry circulation system of water platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116733392A (en) * | 2023-08-15 | 2023-09-12 | 吉林市政建设集团有限公司 | Pile foundation slurry circulation system of water platform |
| CN116733392B (en) * | 2023-08-15 | 2023-10-27 | 吉林市政建设集团有限公司 | Pile foundation slurry circulation system of water platform |
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